Design a German Equatorial Mount Jeff Beish INTRODUCTION After a question from a planetary observer/telescope maker was posed to me concerning telescope mounts a reference…
Improving the Off-Axis Performance of the WO 66Petzval ED Telescope. By Scott Walker, final, 6/2/06 Introduction Many users like the WO 66 Petzval telescope for its compact…
SDS 11 (17 October): Flight Results The SDS, and Variations of the Solar Diameter: Flight 11 (October 16, 2009) Sabatino Sofia Yale University New Haven, CT, USA The SDS…